NONAQUEOUS ELECTROLYTE SECONDARY BATTERY AND METHOD FOR FABRICATING THE SAME

A negative electrode of a nonaqueous electrolyte secondary battery includes a negative electrode current collector (21A) and a negative electrode active material layer (21B). The negative electrode current collector (21A) has a thickness of greater than or equal to 20 μm and less than or equal to 50...

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Bibliographische Detailangaben
Hauptverfasser:	SATO TOSHITADA, KOGETSU YASUTAKA
Format:	Patent
Sprache:	eng
Schlagworte:	BASIC ELECTRIC ELEMENTS ELECTRICITY GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION TECHNICAL SUBJECTS COVERED BY FORMER USPC TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Beschreibung
Zusammenfassung:	A negative electrode of a nonaqueous electrolyte secondary battery includes a negative electrode current collector (21A) and a negative electrode active material layer (21B). The negative electrode current collector (21A) has a thickness of greater than or equal to 20 μm and less than or equal to 50 μm. The negative electrode active material layer (21B) is provided on at least one surface of the negative electrode current collector (21A). The negative electrode is formed by cutting a negative electrode original sheet to a predetermined width. The negative electrode has cutting roll over portions (21D) at cut ends thereof. The cutting roll over portions (21D) are formed by stretching the negative electrode current collector (21A) upwardly or downwardly in the thickness direction of the negative electrode, and are oriented toward an inner side of an electrode group (31).